Permutation wheel for keyless locks



SEpt. 14 1926.

M. WILDRICK PERMUTATION WHEEL FOR KEYLESS LOCKS Filed Oct. 27 1924' Patented Sept. 14, 1926.

UNITED "STATES I 1,600,157 PATENT oFFicE.

MEADE WILDRICK, OF SAVANNAH, GEORGIA, AS SIGNOR T0 W.H. 'KEYLESS LOCK GOM- IPANY, LIMITED, OF HONOLULU, TERRITORY OF HAWAII, A'COEPORATION OF THE TERRITORY OF HAWAII.

PERMUTATION WHEEL FOR KEYLESS LOCKS.

This invention relates to permutation wheels or disks for keyless locks and has for one of its objects to provide a wheel of this character which will be simple in construction comparatively inexpensive to manufacture and more efficient in use than those heretofore proposed.

A further object of the invention is to provide a permutation Wheel which is especially adapted for use with a keyless lock of the type described and claimed in the prior patent of Alexander G. Hatch No.

1,555,969, granted Oct. 6, 1925, entitled.

Keyless locks, although it will be obvious from the following description that the said Wheel ma be employed in other forms of locks, if esired.

With the above and other objects in view which will appear as the description pro ceeds, the invention consists in the novel details of construction and combinations and arrangements of parts more fully hereinafter disclosed and pointed out in the appended claims. v

Referring to the accompanying drawings formin part of this specification, in which like re erence characters designate like parts in all the views:

Figure 1 is a rear sectional elevational view of one form of lock shown in the said 'co-pending application of Alexander G. Hatch with permutation wheels constructed in accordance with the present invention employed therein;

Fig. 2 1s a centralvertical sectional view i113 lright angles to Fig. 1 through the said Fig. 3 is an enlarged side elevational view of one of the permutation wheels or disks, partly broken away to more clearly illustrate the construction thereof; and

Fig. 1 is a central sectional view through the disk shown in Fig. 3. 7

As is disclosed in the said Hatch application, the lock may comprise a casing 6,

in which is mounted a shaft 7 ,which carries the permutation wheels or disks 8. A

slide or bolt 9 is mounted for reciprocation within the said casing or housing 6 and adapted to be reciprocated by means of the thumb piece 10 carried by the transverse shaft .or studll which also carries the disk 12 yiderlvith, slot 1.3 screen g the Application filed October 27, 1924. Serial No. 746,177.

pin 14% carried by the bolt9, as will be clear from Figs. 1 and2. The said bolt 9 is slotted, as indicated-at 15, to accommodate the shaft or stud 11 and to permit of reciprocating movements of the bolt. In locks of this character it is highly desirable that provision be made whereby the combination which will open the lock may be changed at will and it is an important feature of the present. invention to provide permutation wheels which will permit of the ready changing of the combination for this pur-.

pose. To this end the disks or wheels com prising thebody portion 17 have anaxial bore 18 through which the shaft 7 passes.

The outer circumference of the said body portion, indicated at 19, is constructed to receive the outer ring member 20which memher is provided with the laterally proje ct.

ing hub 21 having a plurality of spaced notches or identations 22 adaptedto co-act with a detent spring 23 to retain the wheel in a set position, as will be readily. understood. The said hub 21 is also provided with a bore 24:, see Fig. 3, to receive a set screw or pin 25, the inner end of which is adapted to be received in any one of a plurality of arcuately spaced threaded holes 26,

as will be readily understood. It will thus be apparent that by removing the screw or pin 25 and changing the relative positions of the members 17 and 20 that the relative 27 which are provided upon the outer circumference 28 of the member 20 may be of the position of the index numerals or characters flat faces of the disk. Oommunication between the slots or grooves 32 and 33 is afforded by means of the radially extending slot or groove 34, see Fig. 2, so that the toe 31 of the lug 30 may pass from one an-v nular groove to the other when the bolt is moved after the proper combination has been set.

In order to guard against picking of the lockthe n ie: cirqumfereme qt the outer";

' for groove 32 is provided With a plurality of substantially rectan ular notches or recesses 35 While'the' outer periphery of the inner groove 33 is provided with a series of like notches *crrecesses 36 which extend in radial direction into the" rib 37 which separates the two grooves 32 and 33. It thus results that if one or more of the permutation Wheels are not in the =proper -position to permit of the toe 31 of the bolt 9 to pass through the connecting groove"34; should" an attempt be made toopen the lock by moving the boltf'the said" toes" 31 of :such lugsj 30 will enter into oneoi" therecesses 35 or: 'but (Will beunable to pass into the other groove, aswvill be readily understood. Furthermore-it will be impossible to manipula'te the bolt to bring the? toes "into engage ment" ivitl'i "the "outer "circumference" of" the rib" 37 and" to" thensuccessively"rotate the perrn'utatiomdisksiuntilit can be felt that the toe has reached the pa'SSageS i-Y"whereby it might be po'ssib'l'ehtor" unauthorized per sons 'to discover thefcombination-and open thef lock; It Will *'be"'Obviou's that" if such procedure is attempted in the present instance that the? toesWiH enter f into" the re cess'es "35' 'ijand" owing; to "their rectangular 1 shape Will prevent the rotation of the Wheel for purpose?" lYh'ile oneformpfrthe invention has been illustrated "and" described: it "*tvi'll' be' obvious t11at"those skilled in" the art may vary" the details of 'theconstruction; as" .Well the" precis'e arran 'ements'of the parts, Without departing *from" the spirit of the invention an'd therefoi'e' it is not Wished to be limited tothe'above'disclosure,eXcept as maybe requir'ld; by "thetlaims; VV'hat :is "claimed is l. A 'pe'rm'uta'tionj' fwheel 'f0r'"a 'keyles's lock, said Wheel lliaving a slotted annular rib"'exte'nding' ircm one-of: its surfaces to serve" "as an abutment adapted to prevent movfementof an 'elern'ent of'a lock 'i'necha nism," theslotin'said ribbe'ingadapted to form a passageway -forsuch element-when in registration therewith, said lllO having,

in --the* surface into which oneen'dpf said,

slot "o ens, a series of relatively shallow consecutivelyspaced recesses the entrance portions of vvh1'c-h conf'o'rin' in shape and; size VYlth the entrance? portion of said slot so't aheach-of said'recessesforms a replica offa slotendg said'lslot and said recesses be ing 'equall y spaced'in circularfseries relaa passagewa -for such element '7 when "lugs to obstruct imov'ement?"ofj j said dock ,;the slot in said. rib being.,adapted to each of its opposite surfaces into which the ends of said slotopen, a series ofrelatively shallow spaced recesses the entranc'eportions of Which conform in shape and size with" the entranceportions of"said slot so 7n that-"each of said recesses forms a replica of a slot end. i,

3. A lock comprising a casing, a lock-' controlling inembe'r 'so mounted therein as to be movable from an effective to an ineffecti'vepo'sition; and'vi'ce versa, and a set 01- permutation Wheels mounted in said casing,

said Wheels'having parts "obstructing move- 'ment of said memberfromeither" of said po siti'onst'o the other exceptwh'en'set in'a pre-fi'flfi determined" relation, and also having'indi cia-bearing fperiphe'ral I rtio'nfsiaccessible through slots in s'a'idcasing'by wvh'iclrth may be independently setythefpaf'rts 'of'said" set 'of'vvheels and of said lockcontrolling element, which cooperate'to' obstruct etfec' tive movement" otthe-"latt'er, 'comprisin'gia series of lugs "projectingfrbitibneinto em gaging relations With a "series"off'circularf' abutm' ents carried by the""otl'i'er, eaeh.ofsaid! abutments having a slot 'th'erein into which one of said lugs maybemoved" vvh'e'neverthe: slots and lugs havebeen broughtfinto'regiss 'tration by the setting of said wh'eelsg-iand each of said-abutment's having ,iin' thef'sur face by which it cooperates With-onset saidf lugs fin obstructing movement of said controlling member, a series 'of'relatively shallow spaced "recesses"havingfljentrancei portions conforming "in shape with the en?" trance portion of its respective lug-reciv "ing 'slot."

i. A 'lo'clr "comprising a "casing,"'fa lock- 21 controlling member so mounted*thereini'as"i to be movable from an efi ective'tdaninefJ fective' position, fand'vice'versa, and a SQlZOf permutation Wheels mounted 71in said casing; said Wheels having parts obstructin move ment' of said member from either :0? its" pof-f sitions'to the other except'when'set in a pre- "determined relation, and also" fin-r dicia-bearlng portions accessible through slots in said-casing byrvhich they maybe independently set, the parts of said setof' 'Tvhcels and' of said lock c'ontroilingelement;.

which cooperate to" obstruct/effective move-'1 'mentlof the latter,-'comprising a series of ff lugs proj ecting" fromf one into engagingfrg lations With a seriesfof circular abutm'ents carried by the other, 'eachfofigaid gibfltjfignfg having a pair of opposed surfaces "0t w'vhijch v one set of surfaces-may cooperate with :fsaidii controlling element from "its "eflleeti've to its? ine'li'ective position and the oppqsediset mew- 'cooperate with'i said "lugs; to" "obstructiits movementffromitsine'fi'ec't e to its Teifeti ji tive-positiongf'each of said" 'abutnients hai for cooperation with one of its eflective surfaces to a position adapted for cooperation with its opposed eflective surface whenever the slots and lugs have been brought into registration by the setting of said wheels, and each of said abutments havin in each of the opposed surfaces by which it cooperhaving entrance portions conforming in shape with the entrance portions of its respective lug-receiving slot.

MEADE WILJDRICK. 

